There are many
worthy humanist and freethought organizations, nationally and worldwide,
that take a broadly naturalistic approach to understanding the world and
ourselves. Not surprisingly, they tend to be progressive as well. Supporters of naturalism,
directly or indirectly, include:

Access Research
NetworkThis is a high-powered organization promoting "intelligent
design" theories (antithetical to naturalism) via their journal Origins and Design,
with authors such as Mike Bethe and Phillip Johnson.

Discovery
InstituteIts avowed mission is "nothing less than the overthrow of
materialism and its damning cultural legacies".